To me, these yellow flowers in the sunshine are Oklahoma in the summertime, in the early morning.

Nikon D5100 f/11 ISO 100 1/125s Nikkor 55-300@300mm – Summer 2012
Well, the case could be made that a photo of the ubiquitous dry, brown, crispy grass would be more representative of the last few summers in Oklahoma, but that is not what evokes my desire to run out the door with a camera in the early morning. So this photo of small yellow flowers stretching toward the sun, which was, in fact, taken in Oklahoma in the summertime, stands in my mind for the quintessential Oklahoma Summer Morning.
quintessential: representing the most perfect or typical example of a quality or class
ubiquitous: present, appearing, or found everywhere